private void AddPrimitive(SCNGeometry geometry, float yPos, CABasicAnimation rotationAnimation, SCNMaterial sharedMaterial)
{
var xPos = 13.0f * (float)Math.Sin((float)Math.PI * 2 * PrimitiveIndex / 9.0f);
var zPos = 13.0f * (float)Math.Cos((float)Math.PI * 2 * PrimitiveIndex / 9.0f);
var node = SCNNode.Create();
node.Position = new SCNVector3(xPos, yPos, zPos);
node.Geometry = geometry;
node.Geometry.FirstMaterial = sharedMaterial;
CarouselNode.AddChildNode(node);
PrimitiveIndex++;
rotationAnimation.TimeOffset = -PrimitiveIndex;
node.AddAnimation(rotationAnimation, new NSString("rotationAnimation"));
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
switch (index)
{
case 0:
break;
case 1:
// Set the slide's subtitle and display the primitves
TextManager.SetSubtitle("Built-in parametric primitives");
PresentPrimitives();
break;
case 2:
// Hide the carousel and illustrate SCNText
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0.5f;
SCNTransaction.SetCompletionBlock(() => {
CarouselNode.RemoveFromParentNode();
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
PresentTextNode();
TextNode.Opacity = 1.0f;
SCNTransaction.Commit();
});
CarouselNode.Opacity = 0.0f;
SCNTransaction.Commit();
TextManager.SetSubtitle("Built-in 3D text");
TextManager.AddBulletAtLevel("SCNText", 0);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
break;
case 3:
// Hide the 3D text and introduce SCNShape
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 0.5f;
SCNTransaction.SetCompletionBlock(() => {
if (TextNode != null)
{
TextNode.RemoveFromParentNode();
}
presentationViewController.ShowsNewInSceneKitBadge(true);
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.SetSubtitle("3D Shapes");
TextManager.AddBulletAtLevel("SCNShape", 0);
TextManager.AddBulletAtLevel("Initializes with a NSBezierPath", 0);
TextManager.AddBulletAtLevel("Extrusion and chamfer", 0);
TextManager.AddCode("#aNode.Geometry = SCNShape.#Create# (aBezierPath, 10);#");
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
});
if (TextNode != null)
{
TextNode.Opacity = 0.0f;
}
SCNTransaction.Commit();
break;
case 4:
TextManager.FadeOutText(SlideTextManager.TextType.Bullet);
TextManager.FadeOutText(SlideTextManager.TextType.Code);
// Illustrate SCNShape, show the floor ouline
Level2Node = Level2();
Level2OutlineNode = Level2Outline();
Level2Node.Position = Level2OutlineNode.Position = new SCNVector3(-11, 0, -5);
Level2Node.Rotation = Level2OutlineNode.Rotation = new SCNVector4(1, 0, 0, -(float)(Math.PI / 2));
Level2Node.Opacity = Level2OutlineNode.Opacity = 0.0f;
Level2Node.Scale = new SCNVector3(0.03f, 0.03f, 0);
Level2OutlineNode.Scale = new SCNVector3(0.03f, 0.03f, 0.05f);
GroundNode.AddChildNode(Level2OutlineNode);
GroundNode.AddChildNode(Level2Node);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
Level2OutlineNode.Opacity = 1.0f;
SCNTransaction.Commit();
break;
case 5:
presentationViewController.ShowsNewInSceneKitBadge(false);
// Show the extruded floor
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
Level2Node.Opacity = 1.0f;
Level2Node.Scale = new SCNVector3(0.03f, 0.03f, 0.05f);
SCNTransaction.SetCompletionBlock(() => {
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.5f;
// move the camera a little higher
presentationViewController.CameraNode.Position = new SCNVector3(0, 7, -3);
presentationViewController.CameraPitch.Rotation = new SCNVector4(1, 0, 0, -(float)(Math.PI / 4) * 0.7f);
SCNTransaction.Commit();
});
SCNTransaction.Commit();
break;
case 6:
TextManager.FadeOutText(SlideTextManager.TextType.Subtitle);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
// Example of a custom geometry (Möbius strip)
TextManager.SetSubtitle("Custom geometry");
TextManager.AddBulletAtLevel("Custom vertices, normals and texture coordinates", 0);
TextManager.AddBulletAtLevel("SCNGeometry", 0);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
// move the camera back to its previous position
presentationViewController.CameraNode.Position = new SCNVector3(0, 0, 0);
presentationViewController.CameraPitch.Rotation = new SCNVector4(1, 0, 0, Pitch * (float)(Math.PI / 180.0));
Level2Node.Opacity = 0.0f;
Level2OutlineNode.Opacity = 0.0f;
SCNTransaction.Commit();
break;
}
}
// Create a carousel of 3D primitives
private void PresentPrimitives()
{
// Create the carousel node. It will host all the primitives as child nodes.
CarouselNode = SCNNode.Create();
CarouselNode.Position = new SCNVector3(0, 0.1f, -5);
CarouselNode.Scale = new SCNVector3(0, 0, 0); // start infinitely small
ContentNode.AddChildNode(CarouselNode);
// Animate the scale to achieve a "grow" effect
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
CarouselNode.Scale = new SCNVector3(1, 1, 1);
SCNTransaction.Commit();
// Rotate the carousel forever
var rotationAnimation = CABasicAnimation.FromKeyPath("rotation");
rotationAnimation.Duration = 40.0f;
rotationAnimation.RepeatCount = float.MaxValue;
rotationAnimation.To = NSValue.FromVector(new SCNVector4(0, 1, 0, (float)Math.PI * 2));
CarouselNode.AddAnimation(rotationAnimation, new NSString("rotationAnimation"));
// A material shared by all the primitives
var sharedMaterial = SCNMaterial.Create();
sharedMaterial.Reflective.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/envmap", "jpg"));
sharedMaterial.Reflective.Intensity = 0.2f;
sharedMaterial.DoubleSided = true;
PrimitiveIndex = 0;
// SCNBox
var box = SCNBox.Create(5.0f, 5.0f, 5.0f, 5.0f * 0.05f);
box.WidthSegmentCount = 4;
box.HeightSegmentCount = 4;
box.LengthSegmentCount = 4;
box.ChamferSegmentCount = 4;
AddPrimitive(box, 5.0f / 2, rotationAnimation, sharedMaterial);
// SCNPyramid
var pyramid = SCNPyramid.Create(5.0f * 0.8f, 5.0f, 5.0f * 0.8f);
pyramid.WidthSegmentCount = 4;
pyramid.HeightSegmentCount = 10;
pyramid.LengthSegmentCount = 4;
AddPrimitive(pyramid, 0, rotationAnimation, sharedMaterial);
// SCNCone
var cone = SCNCone.Create(0, 5.0f / 2, 5.0f);
cone.RadialSegmentCount = 20;
cone.HeightSegmentCount = 4;
AddPrimitive(cone, 5.0f / 2, rotationAnimation, sharedMaterial);
// SCNTube
var tube = SCNTube.Create(5.0f * 0.25f, 5.0f * 0.5f, 5.0f);
tube.HeightSegmentCount = 5;
tube.RadialSegmentCount = 40;
AddPrimitive(tube, 5.0f / 2, rotationAnimation, sharedMaterial);
// SCNCapsule
var capsule = SCNCapsule.Create(5.0f * 0.4f, 5.0f * 1.4f);
capsule.HeightSegmentCount = 5;
capsule.RadialSegmentCount = 20;
AddPrimitive(capsule, 5.0f * 0.7f, rotationAnimation, sharedMaterial);
// SCNCylinder
var cylinder = SCNCylinder.Create(5.0f * 0.5f, 5.0f);
cylinder.HeightSegmentCount = 5;
cylinder.RadialSegmentCount = 40;
AddPrimitive(cylinder, 5.0f / 2, rotationAnimation, sharedMaterial);
// SCNSphere
var sphere = SCNSphere.Create(5.0f * 0.5f);
sphere.SegmentCount = 20;
AddPrimitive(sphere, 5.0f / 2, rotationAnimation, sharedMaterial);
// SCNTorus
var torus = SCNTorus.Create(5.0f * 0.5f, 5.0f * 0.25f);
torus.RingSegmentCount = 40;
torus.PipeSegmentCount = 20;
AddPrimitive(torus, 5.0f / 4, rotationAnimation, sharedMaterial);
// SCNPlane
var plane = SCNPlane.Create(5.0f, 5.0f);
plane.WidthSegmentCount = 5;
plane.HeightSegmentCount = 5;
plane.CornerRadius = 5.0f * 0.1f;
AddPrimitive(plane, 5.0f / 2, rotationAnimation, sharedMaterial);
}
public override void PresentStep(int index, PresentationViewController presentationViewController)
{
switch (index)
{
case 0:
TextManager.SetSubtitle("Built-in parametric primitives");
break;
case 1:
PresentPrimitives();
break;
case 2:
// Hide the carousel and illustrate SCNText
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
SCNTransaction.SetCompletionBlock(() => {
if (CarouselNode != null)
{
CarouselNode.RemoveFromParentNode();
}
});
PresentTextNode();
TextNode.Opacity = 1.0f;
if (CarouselNode != null)
{
CarouselNode.Position = new SCNVector3(0, CarouselNode.Position.Y, -50);
CarouselNode.Opacity = 0.0f;
}
SCNTransaction.Commit();
TextManager.SetSubtitle("Built-in 3D text");
TextManager.AddBulletAtLevel("SCNText", 0);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
break;
case 3:
//Show bezier path
var star = StarPath(3, 6);
var shape = SCNShape.Create(star, 1);
shape.ChamferRadius = 0.2f;
shape.ChamferProfile = OutlineChamferProfilePath();
shape.ChamferMode = SCNChamferMode.Front;
// that way only the outline of the model will be visible
var outlineMaterial = SCNMaterial.Create();
outlineMaterial.Ambient.Contents = outlineMaterial.Diffuse.Contents = outlineMaterial.Specular.Contents = NSColor.Black;
outlineMaterial.Emission.Contents = NSColor.White;
outlineMaterial.DoubleSided = true;
var tranparentMaterial = SCNMaterial.Create();
tranparentMaterial.Transparency = 0.0f;
shape.Materials = new SCNMaterial[] {
tranparentMaterial,
tranparentMaterial,
tranparentMaterial,
outlineMaterial,
outlineMaterial
};
StarOutline = SCNNode.Create();
StarOutline.Geometry = shape;
StarOutline.Position = new SCNVector3(0, 5, 30);
StarOutline.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy(0, (float)Math.PI * 2, 0, 10.0)));
GroundNode.AddChildNode(StarOutline);
// Hide the 3D text and introduce SCNShape
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
SCNTransaction.SetCompletionBlock(() => {
TextNode.RemoveFromParentNode();
});
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.SetSubtitle("3D Shapes");
TextManager.AddBulletAtLevel("SCNShape", 0);
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
StarOutline.Position = new SCNVector3(0, 5, 0);
TextNode.Position = new SCNVector3(TextNode.Position.X, TextNode.Position.Y, -30);
SCNTransaction.Commit();
break;
case 4:
star = StarPath(3, 6);
shape = SCNShape.Create(star, 0);
shape.ChamferRadius = 0.1f;
StarNode = SCNNode.Create();
StarNode.Geometry = shape;
var material = SCNMaterial.Create();
material.Reflective.Contents = new NSImage(NSBundle.MainBundle.PathForResource("SharedTextures/color_envmap", "png"));
material.Diffuse.Contents = NSColor.Black;
StarNode.Geometry.Materials = new SCNMaterial[] { material };
StarNode.Position = new SCNVector3(0, 5, 0);
StarNode.Pivot = SCNMatrix4.CreateTranslation(0, 0, -0.5f);
StarOutline.ParentNode.AddChildNode(StarNode);
StarNode.EulerAngles = StarOutline.EulerAngles;
StarNode.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy(0, (float)Math.PI * 2, 0, 10.0)));
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1.0f;
SCNTransaction.SetCompletionBlock(() => {
StarOutline.RemoveFromParentNode();
});
shape.ExtrusionDepth = 1;
StarOutline.Opacity = 0.0f;
SCNTransaction.Commit();
break;
case 5:
//OpenSubdiv
TextManager.FlipOutText(SlideTextManager.TextType.Subtitle);
TextManager.FlipOutText(SlideTextManager.TextType.Bullet);
TextManager.SetSubtitle("Subdivisions");
TextManager.AddBulletAtLevel("OpenSubdiv", 0);
TextManager.AddCode("#aGeometry.#SubdivisionLevel# = anInteger;#");
TextManager.FlipInText(SlideTextManager.TextType.Subtitle);
TextManager.FlipInText(SlideTextManager.TextType.Bullet);
TextManager.FlipInText(SlideTextManager.TextType.Code);
//add boxes
var boxesNode = SCNNode.Create();
var level0 = Utils.SCAddChildNode(boxesNode, "rccarBody_LP", "Scenes.scnassets/car/car_lowpoly", 10);
level0.Position = new SCNVector3(-6, level0.Position.Y, 0);
var label = Utils.SCBoxNode("0", new CGRect(0, 0, 40, 40), NSColor.Orange, 20.0f, true);
label.Position = new SCNVector3(0, -35, 10);
label.Scale = new SCNVector3(0.3f, 0.3f, 0.001f);
level0.AddChildNode(label);
boxesNode.Position = new SCNVector3(0, 0, 30);
var level1 = level0.Clone();
/*foreach (var child in level1.ChildNodes) {
* if (child.Name != "engine_LP") {
* child.Geometry = (SCNGeometry)child.Geometry.Copy ();
* child.Geometry.SubdivisionLevel = 3;
* }
* }*/
level1.Position = new SCNVector3(6, level1.Position.Y, 0);
boxesNode.AddChildNode(level1);
label = Utils.SCBoxNode("2", new CGRect(0, 0, 40, 40), NSColor.Orange, 20.0f, true);
label.Position = new SCNVector3(0, -35, 10);
label.Scale = new SCNVector3(0.3f, 0.3f, 0.001f);
level1.AddChildNode(label);
level0.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy((float)Math.PI * 2, new SCNVector3(0, 1, 0), 45.0)));
level1.RunAction(SCNAction.RepeatActionForever(SCNAction.RotateBy((float)Math.PI * 2, new SCNVector3(0, 1, 0), 45.0)));
SCNTransaction.Begin();
SCNTransaction.AnimationDuration = 1;
SCNTransaction.SetCompletionBlock(() => {
StarNode.RemoveFromParentNode();
});
// move the camera back to its previous position
presentationViewController.CameraNode.Position = new SCNVector3(0, 0, 0);
presentationViewController.CameraPitch.Rotation = new SCNVector4(1, 0, 0, Pitch * (float)Math.PI / 180.0f);
StarNode.Position = new SCNVector3(StarNode.Position.X, StarNode.Position.Y, StarNode.Position.Z - 30);
StarOutline.Position = new SCNVector3(StarOutline.Position.X, StarOutline.Position.Y, StarOutline.Position.Z - 30);
GroundNode.AddChildNode(boxesNode);
//move boxes in
boxesNode.Position = new SCNVector3(0, 0, 3.5f);
SCNTransaction.Commit();
break;
}
}